Globular cluster in the constellation Ophiuchus

NGC 6355

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All data from the card 10

Constellation: Ophiuchus
Right ascension: 17h 23m 58.6s
Declination: −26° 21′ 12″
Distance: 8.54 ± 0.19 kpc (27.85 ± 0.62 kly)
Apparent magnitude (V): 8.6
Apparent dimensions (V): 4.20
Absolute magnitude: -8.07
Metallicity: [Fe/H] = −1.39 ± 0.08 dex
Estimated age: 13.2 ± 1.1 Gyr
Other designations: Cr 330, GCL 63 and ESO 519-SC15

NGC 6355 is a globular cluster located in the constellation Ophiuchus. It is at a distance of 28,000 light years away from Earth, and is currently part of the Galactic bulge.

NGC was discovered by the German-born British astronomer William Herschel on 24 May 1784. It was initially thought to be an open cluster, but its true nature as a globular cluster was later confirmed. It is a core-collapse cluster.

NGC 6355

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